This document discusses browser add-ons and how they can improve testing efficiency. It describes browser add-ons as software extensions that add functionality to web browsers. Three add-ons are highlighted that improve testing: Responsive Web Design Tester tests websites on different screen sizes; W3Techs displays the technologies used by websites with a click; and Form Filler speeds up filling forms by auto-filling fields or bulk entry of test data. The document advocates for browser add-ons to enhance testing capabilities and productivity.